A5003195136- Perovskite Materials and Applications
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Organic Light-Emitting Diodes Research
- Advanced battery technologies research
- Solid-state spectroscopy and crystallography
- Organic Electronics and Photovoltaics
- Advanced Nanomaterials in Catalysis
- Crystallization and Solubility Studies
- Photonic and Optical Devices
- X-ray Diffraction in Crystallography
- Advanced Battery Materials and Technologies
- Advanced Photonic Communication Systems
- 2D Materials and Applications
- Advancements in Battery Materials
- Electrochemical sensors and biosensors
- Coral and Marine Ecosystems Studies
- Advancements in Solid Oxide Fuel Cells
- MXene and MAX Phase Materials
- Pigment Synthesis and Properties
- Advanced Battery Technologies Research
- Silicon Nanostructures and Photoluminescence
Wuhan University of Technology
2023-2025
Wuhan National Laboratory for Optoelectronics
2014-2023
Huazhong University of Science and Technology
2014-2023
University of Toronto
2022
Gratz College
2014-2020
Nanjing University of Information Science and Technology
2015-2019
University of Houston
2015-2017
Stanford University
2009
We fabricated a perovskite solar cell that uses double layer of mesoporous TiO2 and ZrO2 as scaffold infiltrated with does not require hole-conducting layer. The was produced by drop-casting solution PbI2, methylammonium (MA) iodide, 5-ammoniumvaleric acid (5-AVA) iodide through porous carbon film. 5-AVA templating created mixed-cation (5-AVA)x(MA)1-xPbI3 crystals lower defect concentration better pore filling well more complete contact the scaffold, resulting in longer exciton lifetime...
A mesoscopic methylammonium lead iodide (CH3NH3PbI3) perovskite/TiO2 heterojunction solar cell is developed with low-cost carbon counter electrode (CE) and full printable process. With black/spheroidal graphite CE, this presents high stability power conversion efficiency of 6.64%, which higher than that the flaky based device comparable to conventional Au version.
A type of strain sensor with high tolerable based on a ZnO nanowires/polystyrene nanofibers hybrid structure polydimethylsiloxane film is reported. The novel can measure and withstand demonstrates good performance rapid human-motion measurements. In addition, the device could be driven by solar cells. results indicate that has potential applications as an outdoor system. Detailed facts importance to specialist readers are published "Supporting Information". Such documents peer-reviewed, but...
Over the past five years, rapid emergence of a new class solar cell based on mixed organic–inorganic halide perovskite semiconductors has captured attention scientists and researchers in field energy conversion. Benefiting from optimization film deposition approaches, design material systems, diversity device concepts, efficiency cells (PSCs) increased 2.19% 2006 to certified 20.1% 2014, making this fastest‐advancing technology date. However, as photovoltaic technology, which needs meet...
The formation of intermediate phase (CH<sub>3</sub>NH<sub>3</sub>)<sub>2</sub>Pb<sub>3</sub>I<sub>8</sub>·2DSMO in the solution process benefits growth high-quality perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>film.
The commercial manufacturing of perovskite solar modules (PSM) suffers from stability concerns and scalability issues. We demonstrate a hole‐conductor‐free printable module embodiment, which employs triple layer mesoporous TiO 2 /ZrO /carbon as scaffold, is infiltrated by mixed cation lead halide (5‐AVA) x (MA) 1−x PbI 3 light harvester. Here, hole conductor or Au reflector are not employed, instead, the back contact comprises simply printed carbon layer. Upon optimizing thickness alignment...
Abstract Organometal lead halide perovskites have been widely used as the light harvester for high-performance solar cells. However, typical of methylammonium halides (CH 3 NH PbX , X=Cl, Br, I) are usually sensitive to moisture in ambient air, and thus require an inert atmosphere process. Here we demonstrate a moisture-induced transformation perovskite crystals triple-layer scaffold TiO 2 /ZrO /Carbon fabricate printable mesoscopic An additive ammonium chloride (NH 4 Cl) is employed assist...
We report here the first successful demonstration of a "π-conjugated redox polymer" simultaneously featuring π-conjugated backbone and integrated sites, which can be stably reversibly n-doped to high doping level 2.0 with significantly enhanced electronic conductivity. The properties such heavily n-dopable polymer, poly{[N,N′-bis(2-octyldodecyl)-1,4,5,8-naphthalenedicarboximide-2,6-diyl]-alt-5,5′-(2,2′-bithiophene)} (P(NDI2OD-T2)), were compared vis-à-vis those corresponding...
Abstract Perovskite solar cells (PSCs) have rapidly developed and achieved power conversion efficiencies of over 20% with diverse technical routes. Particularly, planar‐structured PSCs can be fabricated low‐temperature (≤150 °C) solution‐based processes, which is energy efficient compatible flexible substrates. Here, the efficiency stability planar are enhanced by improving interface contact between SnO 2 electron‐transport layer (ETL) perovskite layer. A biological polymer (heparin...
A bifunctional conjugated organic molecule 4-(aminomethyl) benzoic acid hydroiodide (AB) is designed and employed as an cation in organic-inorganic halide perovskite materials. Compared with the monofunctional benzylamine (BA) nonconjugated 5-ammonium valeric acid, devices based on AB-MAPbI3 show a good stability superior power conversion efficiency of 15.6% short-circuit current 23.4 mA cm-2 , open-circuit voltage 0.94 V, fill factor 0.71. The not only benefits growth crystals mesoporous...
A hole-conductor-free fully printable mesoscopic TiO2/CH3NH3PbI3 heterojunction solar cell was developed with TiO2 nanosheets containing high levels of exposed (001) facets. The embodiment employed a double layer mesoporous and ZrO2 as scaffold infiltrated by perovskite light harvester. No hole conductor or Au reflector employed. Instead, the back contact simply carbon layer. from solution through porous reactivity facets in improved interfacial properties between electron collector. As...
The tunable hysteresis effect of perovskite solar cells clarifies the importance c-TiO<sub>2</sub>/perovskite interface, and provides significant insights towards understanding this rapidly developing photovoltaic technology.
Microscopic understanding of interaction between H2O and MAPbI3 (CH3NH3PbI3) is essential to further improve efficiency stability perovskite solar cells. A complete picture from initial physical uptake water molecules final chemical transition its monohydrate MAPbI3·H2O obtained with in situ infrared spectroscopy, mass monitoring, X-ray diffraction. Despite strong affinity MA water, absorbs almost no ambient air. Water penetrate the lattice share space up one per at high-humidity levels....
Abstract Perovskite solar cells (PSCs) have achieved high power conversion efficiency on the lab scale, rivaling other commercialized photovoltaic technologies. However, stability issues made it difficult for PSCs to achieve comparable or practical lifetimes in outdoor applications. Here, three different types of hot melt films (polyurethane, PU; polyolefin, POE; and ethylene vinyl acetate, EVA) together with glass sheets are employed encapsulate printable PSCs. The influence thermal stress...
Abstract Perovskite solar cells have reached a power conversion efficiency over 25%, and the engineering of interface between perovskite hole transport layer (HTL) has been crucial to achieve high performance. Here we design bifunctional molecule CBz-PAI with carbazole-triphenylamine phenylammonium iodide units passivate defects at perovskite/HTL interface. Owing favourable energy level alignment perovskite, acts as shuttle HTL. This minimizes difference quasi-Fermi splitting or ‘internal’ V...
High-quality perovskite light harvesters and robust organic hole extraction layers are essential for achieving high-performing solar cells (PSCs). We introduce a phosphonic acid-functionalized fullerene derivative in mixed-cation perovskites as grain boundary modulator to consolidate the crystal structure, which enhances tolerance of film against illumination, heat, moisture. also developed redox-active radical polymer, poly(oxoammonium salt), that can effectively p-dope hole-transporting...
Abstract The self‐assembled hole transporting molecules (SAHTMs) bearing anchoring groups have been established as the layers (HTLs) for highly efficient p–i–n perovskite solar cells (PSCs), yet their stability and engineering at molecular level remain challenging. A topological design of anisotropic aligned SAHTM‐based HTLs operationally stable PSCs that exhibit exceptional solar‐to‐electric power conversion efficiencies (PCEs) is demonstrated. judiciously designed multifunctional comprise...
Mixed-anion perovskite CH3NH3PbI(3−x)(BF4)x has been developed and optimized to enable a highly efficient hole-conductor-free fully printable mesoscopic solar cell. The employment of BF4− in hybrid organic–inorganic halide significantly improves its optical electric properties, such as light harvesting ability, carrier concentration, conductivity, leading an enhanced power conversion efficiency 13.24%. As service our authors readers, this journal provides supporting information supplied by...
A multifunctional additive of guanidinium chloride (GuCl) in a CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> perovskite absorber enabled high open-circuit voltage over 1.0 V for printable mesoscopic solar cells based on TiO<sub>2</sub>/ZrO<sub>2</sub>/carbon architecture.